Github user ben-manes commented on the issue:
https://github.com/apache/metron/pull/940
Do you know what the hit rates were, for the same data set, between Guava
and Caffeine? The caches use different policies so it is always interesting to
see how the handle given workloads. As we continue to refine our adaptive
algorithm W-TinyLFU, its handy to know what types of workloads to investigate.
(P.S. We have a simulator for re-running persisted traces if useful for your
tuning)